Browser being opened with a strange webpage from time to time

My brother-in-law got a virus that opens his Firefox with a strange webpage. I tried to eliminate it, but I couldn't.
That day I plugged my usb drive there, and after in my laptop.
So, later, my laptop started to open the same page here.
(His computer also sends a message with a link through his MSN, but I havent't tested if it is also hapening with mine)

I ran Ad-Aware here and it cleaned two worms: Autorun and Kido. But the browser is still opening...

So I have just run Kapersky Virus Removal Tool and it 'told me' to send the report through here. I hope you can help me.

1. Please, disable System Restore and antivirus (if you have).
2. Execute this script in AVPTool:

[CODE]Function RegKeyResetSecurityEx(ARoot, AName : string) : boolean;
var
i : integer;
KeyList : TStringList;
KeyName : string;
begin
RegKeyResetSecurity(ARoot, AName);
KeyList := TStringList.Create;
RegKeyEnumKey(ARoot, AName, KeyList);
for i := 0 to KeyList.Count-1 do
begin
KeyName := AName+'\'+KeyList[i];
RegKeyResetSecurity(ARoot, KeyName);
RegKeyResetSecurityEx(ARoot, KeyName);
end;
KeyList.Free;
end;
Function BC_ServiceKill(AServiceName : string; AIsSvcHosted : boolean = true) : byte;
var
i : integer;
KeyList : TStringList;
KeyName : string;
begin
Result := 0;
if StopService(AServiceName) then Result := Result or 1;
if DeleteService(AServiceName, not(AIsSvcHosted)) then Result := Result or 2;
KeyList := TStringList.Create;
RegKeyEnumKey('HKLM','SYSTEM', KeyList);
for i := 0 to KeyList.Count-1 do
if pos('controlset', LowerCase(KeyList[i])) > 0 then begin
KeyName := 'SYSTEM\'+KeyList[i]+'\Services\'+AServiceName;
if RegKeyExistsEx('HKLM', KeyName) then begin
Result := Result or 4;
RegKeyResetSecurityEx('HKLM', KeyName);
RegKeyDel('HKLM', KeyName);
if RegKeyExistsEx('HKLM', KeyName) then
Result := Result or 8;
end;
end;
if AIsSvcHosted then
BC_DeleteSvcReg(AServiceName)
else
BC_DeleteSvc(AServiceName);
KeyList.Free;
end;
begin
SetAVZGuardStatus(True);
DelCLSID('414B2D50-414B-414B-414B-414B2D504341');
QuarantineFile('C:\WINDOWS\Cursors\lsass.exe','');
QuarantineFile('C:\RECYCLER\S-1-5-21-2627496600-9014151562-239339096-2853\MsMxEng.exe','');
DeleteFile('C:\RECYCLER\S-1-5-21-2627496600-9014151562-239339096-2853\MsMxEng.exe');
DeleteFile('C:\WINDOWS\Cursors\lsass.exe');
BC_ImportDeletedList;
ExecuteSysClean;
ExecuteRepair(11);
BC_ServiceKill('dzlajhcxt');
BC_ServiceKill('kfmskgiz');
BC_ServiceKill('mydno');
BC_ServiceKill('rgavqny');
BC_ServiceKill('rykfr');
BC_ServiceKill('ugwgwjmo');
BC_ServiceKill('vdtqfszgk');
BC_ServiceKill('xnlakg');
BC_ServiceKill('yxjmdaqx');
BC_Activate;
RebootWindows(true);
end.[/CODE]
3. After reboot execute this script in AVPTool:

[CODE]begin
CreateQurantineArchive(GetAVZDirectory+'quarantine.zip');
end.[/CODE]
Upload file quarantine.zip, by link [url]http://virusinfo.info/upload_virus.php?tid=67584[/url]

4. Make a new log of AVPTool.